Water silencer



iol.. ML'UUQHUO Patented Mar. 19, 1940 UNITED STATES PATENT OFFICE 2Claims.

My invention relates to improvements in water silencers of the typewhere the static head of the water is eliminated by a change in thedirection of the flow.

When a liquid under high pressure flows out o a pipe, faucet or othervessel the liquid particles are flung out with a large speed and willset the surrounding air in vibration. A considerable amount of theenergy inherent in the pressure head under which the liquid is flowingwill be transferred into noise. This is particularly objectionable inmany instances such as when drawing water. for baths in multi-familydwellings, etc., where silence would be desirable.

An important object of my invention is, therefore, to provide a devicewhich will silence the water owing into an open vessel, such as a bathtub.

Another object of my invention is to provide a device of such simpleconstruction that it can be manufactured at a low cost and installedwithout difculty.

Further objects and advantages of my invention will be apparent duringthe course of the following description.

In the accompanying drawing, forming a part of this specification, andin which like numerals are employed to designate like parts throughoutthe same:

Figure 1 is a central section through a device embodying my invention,

Figure 2 is a side elevation of same,

Figure 3 is a section along line 3-3 in Fig. 2, and,

Figure 4 is a diagrammatical sketch illustrating the direction of flow.

In the drawing, wherein for the purpose of illustration, is shown apreferred embodiment of my invention, the numeral 5 designates a tubularbody, preferably of flexible material such as rubber, with the entranceopening 6 adapted to slip over a faucet. One end 'l of the flexibletubular body is attached to the tube 8 which is slidably inserted inbushing 9. The other end of tube 8 is permanently closed with plug I0.The end of tube 8 which is near plug l0 has a number of holes orperforations Il. Bushing 9 is fastened in the outer tubing I2 which isopen at one end carries suitable notches I3 to permit the liquid toescape.

The operation of my invention is as follows: The opening B is placedover the outlet opening, such as the faucet, and the liquid ows throughthe inner tube 8 and through the openings Il and down through the tubeI2 and out through the open end of same. The tube 8 is slidable inbushing 9 so as to permit the longitudinal extentotal change indirection of, say, 150 degrees.

sion of the device to the bottom of the vessel to be filled.

The silencing action of my invention depends on a scientific principlewell known in physics and hydraulics. According to this principle anychange in direction of a jet of liquid is accompanied by a loss inhydro-static pressure, or simply a loss of energy. In my invention theproblem of removing the hydro-static pressure lo head of the liquid isaccomplished by changing the direction of now rst at right anglesoutward, and then again at right angles downward, as indicated by arrowsin Fig. 4. According to the above mentioned scientific principle achange of 15 direction of 180 .degrees removes the hydrostatic pressurehead completely, and that is what is accomplished in my invention bychanging direction of degrees twice. It must be understood, however,that a smaller change than degrees might in many cases remove sufficientpressure head to make the llow silent, and I will therefore not belimited to the degrees of change in the direction of the flow, as itwould take only mechanical skill to change my device to have a 25 It isto be understood that the form of my invention, herewith shown anddescribed, is to be taken as a preferred example of the same, and thatvarious changes of materials, in the shape, size, form and arrangementof parts may be resorted to, without departing from the spirit of myinvention, or the scope of the subjoined claims.

Having thus described my invention, I claim:

l. A water silencer of the character described comprising a tubularinner body, closed at its lower end and having numerous transverseperforations near its closed end; an outer tubular member placedconcentric over said inner tubular body, said outer tubular member beingopen at 40 the lower end and extending over the closed end of the innertubular body, and a bushing slidable on said inner tubular body andfastened to the upper end of the outer tubular member.

2. A water silencer of the character described comprising a tubularinner body, closed at its lower end and having a plurality of transverseholes near its closed end; an outer tubular member placed concentricover said inner tubular body, the outer tubular member being narrower atthe upper end which forms a water-tight slidable bearing around theinner tubular body, this bearing being normally located above thetransverse holes in said inner tubular body, the lower end of the outertubular member being open, and 55 flexible coupling means for connectingthe open upper end of the inner tubular body to a faucet.

JOHN B. DAHL.

